powerpc/xive: Simplify the dump of XIVE interrupts under xmon

Move the xmon routine under XIVE subsystem and rework the loop on the
interrupts taking into account the xive_irq_domain to filter out IPIs.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210331144514.892250-7-clg@kaod.org

diff --git a/arch/powerpc/include/asm/xive.h b/arch/powerpc/include/asm/xive.h
index 9a312b9..aa094a8 100644 (file)
--- a/arch/powerpc/include/asm/xive.h
+++ b/arch/powerpc/include/asm/xive.h
@@ -102,6 +102,7 @@ void xive_flush_interrupt(void);
 /* xmon hook */
 void xmon_xive_do_dump(int cpu);
 int xmon_xive_get_irq_config(u32 hw_irq, struct irq_data *d);
+void xmon_xive_get_irq_all(void);
 
 /* APIs used by KVM */
 u32 xive_native_default_eq_shift(void);

diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c
index 41753aa..ba2cc14 100644 (file)
--- a/arch/powerpc/sysdev/xive/common.c
+++ b/arch/powerpc/sysdev/xive/common.c
@@ -289,6 +289,20 @@ int xmon_xive_get_irq_config(u32 hw_irq, struct irq_data *d)
        return 0;
 }
 
+void xmon_xive_get_irq_all(void)
+{
+       unsigned int i;
+       struct irq_desc *desc;
+
+       for_each_irq_desc(i, desc) {
+               struct irq_data *d = irq_desc_get_irq_data(desc);
+               unsigned int hwirq = (unsigned int)irqd_to_hwirq(d);
+
+               if (d->domain == xive_irq_domain)
+                       xmon_xive_get_irq_config(hwirq, d);
+       }
+}
+
 #endif /* CONFIG_XMON */
 
 static unsigned int xive_get_irq(void)

diff --git a/arch/powerpc/xmon/xmon.c b/arch/powerpc/xmon/xmon.c
index 3fe3749..80fbf89 100644 (file)
--- a/arch/powerpc/xmon/xmon.c
+++ b/arch/powerpc/xmon/xmon.c
@@ -2727,30 +2727,6 @@ static void dump_all_xives(void)
                dump_one_xive(cpu);
 }
 
-static void dump_one_xive_irq(u32 num, struct irq_data *d)
-{
-       xmon_xive_get_irq_config(num, d);
-}
-
-static void dump_all_xive_irq(void)
-{
-       unsigned int i;
-       struct irq_desc *desc;
-
-       for_each_irq_desc(i, desc) {
-               struct irq_data *d = irq_desc_get_irq_data(desc);
-               unsigned int hwirq;
-
-               if (!d)
-                       continue;
-
-               hwirq = (unsigned int)irqd_to_hwirq(d);
-               /* IPIs are special (HW number 0) */
-               if (hwirq)
-                       dump_one_xive_irq(hwirq, d);
-       }
-}
-
 static void dump_xives(void)
 {
        unsigned long num;
@@ -2767,9 +2743,9 @@ static void dump_xives(void)
                return;
        } else if (c == 'i') {
                if (scanhex(&num))
-                       dump_one_xive_irq(num, NULL);
+                       xmon_xive_get_irq_config(num, NULL);
                else
-                       dump_all_xive_irq();
+                       xmon_xive_get_irq_all();
                return;
        }